Brand NO Quantity 1 Color Black Audio Mode Natural Display Mode Sequence Menu Language None Display Size No Display Resolution No Touch Screen No Memory Card Type TF Memory No Max Extended Capacity 16GB Audio Formats MP3 / WAV / WMA Headphone Jack 3.5 mm Other Connections Mini USB Battery Type Li-ion polymer Battery Capacity 140 mAh Work Time 10 hours Other Features Compatible with TF card (16GB max.); USB 1.1 / 2.0 connector with hot swapping function; Rechargeable 140mAh Li-ion battery supports up to 10 hours music play; Frequency response: 20Hz~20KHz; Working temperature: 0~50'C; Compatible system: Windows 2000 / XP / Vista / 7 / linux. Packing List 1 x MP3 1 x Earphone (110cm) 1 x USB cable 1 x English manual